Drilling-machine.



Patented oat. 13,1908.

WILLIAM J. KEEeAN; OF wIN'rHRoP, NEW YORK.

' DRILLING-MACHINE.

Specification of Letters Patent.

Patented Oct. 13, 1908.

Application filed December 10, 1907. Serial No. 405,928.

To all whom it may concern.-

Be it known that I, WILLIAM J. KEEGANfiL citizen of the United States, residing at Winthrop, in the county of St. Lawrence I and State of New York, have invented a new and useful Drilling-Machine, of which the fol lowing is a specification.

r The invention relates to improvementsin drilling machines.

The object of the present invention is t 1mprove the construction of drilling machines, and to provide a simple, inexpensive and efficient device, capable after a hole has been drilled, of rapidly raisinglor with-i drawing the drill from the hole, and adapted to aiford a quick adjustment of the drill to save time in positioning the drill properly with relation to the work.

WVith these and other objects in view, the invention consists in the construction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawing, and pointed out in the claims hereto appended, it being understood that various changes in the form, proportion, size and minor details of construction, within the scope of the claims, may be resorted to Without departing from the spirit or sacrificing anyof the advantages of the invention. I

In the drawing :Figure 1 is a side elevation of a drill, provided with a device constructed in accordance with this invention. Fig. 2 is a front elevation of the same. Fig. 3 is a detail view of the shiftable gear for connecting the feed wheel with and for disconnecting it from the gearing for operating the drill. Fig. 4 is a detail view of the shifting lever.

Like numerals of reference designate corresponding parts in all the figures of the drawing.

The drilling machine, which may be of any ordinary well known construction, is equipped with an automatically operable feed wheel 1, provided at its upper face with ratchet teeth 2, which during the drilling operation is engaged by an actuating pawl or dog 3 in the usual manner. The sleeve 4: of the feed wheel receives a shiftable gear 5, which is movable into and out of mesh with the vertical gear 6 of the gearing for operating the drill. The vertical gear wheel 6, which is rotated by a crank 7 meshes with a lower pinion 8, which is connected with the drill 9. Bevel gears arelemployed and I the shiftable Wheel, which is slidable vertically. on the sleeve of the feed wheel, is provided at the bottom with a depending smooth portion or flange 10, having opposite slots 11, adapted to engage pins or projections 12 of the sleeve 4, whereby the shiftable gear is detachably interlocked with the sleeve of the feed wheel. The shiftable gear is engaged with the sleeve of the feed wheel by moving the former downwardly from the position illustrated in Fig. 1 of the drawing to that shown in Fig. 2, the shiftable wheel being partially rotated by hand to bring the slots above thepins or projections 12. A single slot and pin may be employed if desired. The slots or'recesses 11 are provided at their upper ends with horizontal branches 11, adapted to receive the pins or projections 12 to positively retain the shiftable wheel in mesh with the gear wheel 6 when raising the drill. The slots 11 and their branches form partial bayonet slots, and the shiftable wheel is retained by its weight in engagement with the gear wheel 6 when lowering the drill. The smooth portion or flange 10 is provided at its \lower edge with notches 10, adapted to engage the pins or projections to prevent the shiftable gear from accidentally slipping, when it is out of engagement with the sleeve of the feed wheel.

' The shiftable gear is provided at the top with a horizontal annular flange 13, which rests upon a curved arm 14 of a shifting lever 15, fulcrumed at an intermediate point at 16 on the frame 17 of the drilling machine and havin an outer handle portion or arm 18. The s lifting lever is also provided with an inclined connecting arm 19, extending upwardly and inwardly to the pawl or dog 3, which is provided with aneye 20 for the reception of the upper terminal 21 of the arm 19. The upper terminal of the arm 19 is bent at an angle, and is provided with a perforation 22 for the reception of a pin or key for retaining it in the eye 20 of the pawl or dog 3.

' During the drilling operation the shiftable gear is in an elevated position out of mesh with the gear 6, it being supported in such position by resting upon the pins or projections 12. After the drilling operation has been completed, the shiftable gear is partially rotated by hand to bring the slots above the pins or projections 12, and it is then dropped by the shifting lever into mesh with the gear 6. The pawl or dog 3 is lifted out of engagement with the feed wheel simultaneously with the movement of the shiftable gear into mesh with the vertical gear 6. The crank is then rotated in the same direction as when drilling, which operation rapidly lifts the drill from the work. The crank may then be rotatedin the opposite direction to quickly position the drill with relation to the work. hen the drill is in proper position for drilling, the shiftable gear is lifted out of mesh with the gear 6 and is partially rotated by hand to carry the slots away from the pin orprojection, which then supports the shiftable gear out of engagement with the vertical gear. The upward movement of the shiftable gear swings the pawl or dog downward into engagement with the teeth of the feed wheel.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. The combination with a drilling machine having gearing for operating a drill and provided with feed mechanism including a feed wheel, and a dog or pawl for actuating the same, of a shiftable gear movable into and out of mesh with the said gearing to connect the feed mechanism with the same and to disconnect it therefrom, means for connecting the feed wheel with the shiftable gear, and means movable with the shiftable gear for moving the pawl or dog out of engagement with the feed wheel when the gear moved into mesh with the said gearing and for engaging the pawl or dog with the feed wheel when the shiftable gear is moved out of mesh with the gearing.

2. The combination with a drilling machine having gearing for operating a drill and provided with feed mechanism including a feed wheel, and a dog or pawl for actuating the same, of a shiftable gear movable into and out of mesh with the said gearing to connect the feed mechanism with the same and to disconnect it therefrom, means for connecting the feed wheel with the shiftable gear, and a lever connected with the pawl or dog and receiving the shiftable gear for simultaneously moving the former when the latter is moved into and out of mesh with the said gearing.

3. The combination with a drilling machine having gearing for operating a drill and provided with feed mechanism including a feed wheel, and a dog or pawl for actuating the same, of a shiftable gear movable into and out of mesh with the said gearing to connect the feed mechanism with the same and to disconnect it therefrom, means for connecting the feed wheel with the shiftable gear, and a lever fulcrumed at an interme diate point and provided with a curved arm receiving the shiftable gear, said lever being also provided with an angularly disposed connecting arm extending to and connected with the pawl or dog.

t. The combination with a drilling machine having gearing for operating a drill and provided with feed mechanism including a. feed wheel, and a dog or pawl for actuating the same, of a shiftable gear located beneath the feed wheel and movable into and out of mesh with the said gearing to connect the feed mechanism with the same and to disconnect it therefrom, means for connecting the feed wheel with the shiftable gear, and an approximately horizontal lever 'l'nlcrumed at an intermediate point and having its inner arm arranged to receive the shiftable gear, said lever being provided at its outer arm with an inclined connecting arm extending upward and inward beyond the vertical plane of the fulcrum point of the lever to and connected with the pawl or dog.

'The combination with a drilling machine having gearing for operating the drill and provided with feed mechanism including a feed wheel having a sleeve, a projection carried by the sleeve, and a pawl or dog for engaging the feed wheel, of a shiftable gear slidable on the sleeve to move it into and out of mesh with the said gearing and having a slot for engaging the said projection to interlock it with the sleeve. said gear being also supported out of mesh by the said projection.

G. The combination with a drilling machine having gearing for operating the drill and provided with feed mechanism including a feed wheel having a sleeve, a projection carried by the sleeve, and a pawl or dog for engaging the feed wheel, of a shiftable gear slidable on the sleeve to move it into and out of mesh with the said gearing and having a slot for engaging the said projection to interlock it with the sleeve, said gear being also supported out of mesh by the said projection, and means for connecting the shiftable gear with the pawl or dog for moving the latter out of engagement with the feed wheel when the former is moved into mesh with the said gearing and for moving the pawl or dog into engagement with the feed wheel when the shiftable gear is moved out of mesh.

7. The combination with a drilling machine having gearing for operating the drill and provided with feed mechanism including a feed wheel having a. sleeve, and a. pawl 01' dog for engaging the feed wheel, of a. shiftable gear slidable on the sleeve to move it into and out of mesh with the said gearing and provided with a horizontal annular flange, means for interlocking the shift able gear with the sleeve when the former is in mesh with the said gearing, and a substantially horizontal level fnlcrinned at an intermediate point and having its inner arm curved and arranged to receive the said flange, and an inclined arm extending from the outer portion of the lever to the pawl or dog and connected with the same.

'8. The combination with a drilling machine having gearing for operating the drill and provided with feed mechanism including a feed wheel having a sleeve, a projection carried by the sleeve, and a pawl or dog for engaging the feed wheel, of a shiftable gear slidable on the sleeve to move it into and out of mesh with the said gearing and provided with a slot arranged to receive the said projection and having a branch or extension forming a partial bayonet slot.

9. The combination with a drilling machine having gearing for operating the drill and provided with feed mechanism includ ing a feed wheel having a sleeve, a projec- -tion carried by the sleeve, and a pawl or dog for engaging the feed wheel, of a shiftable gear slidable on the sleeve to move it into and out of mesh with the said gearing and provided with a slot to receive the said projection and having a notch at its lower edge for engaging the projection.

In testimony, that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

his WILLIAM J. KEEGAN.

mark

Witnesses ALLEN O. J ormson, AGNES S. STEARNS. 

